The Magpul MOE Stock Mil-Spec model is a drop-in replacement butt-stock for carbines using mil-spec receiver extension tubes. Designed for light, fast action the streamlined A-frame profile avoids snagging and shields the release latch to prevent accidental activation. The extra-power lock mechanism uses a premium chrome-silicon spring to avert auto collapse failure and maintains strength by resisting spring relaxation. The Mil-Spec model includes a standard 0.30" rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear.